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Review
. 2014 Oct;46(8):2668-72.
doi: 10.1016/j.transproceed.2014.08.015.

Pregnancy after kidney transplantation: a single-center experience and review of the literature

A Dębska-Ślizień  1 , J Gałgowska  1 , A Chamienia  2 , B Bułło-Piontecka  1 , E Król  1 , M Lichodziejewska-Niemierko  1 , S Lizakowski  1 , M Renke  3 , P Rutkowski  1 , Z Zdrojewski  4 , K Preis  5 , Z Sledziński  6 , B Rutkowski  1
Affiliations
Review

Pregnancy after kidney transplantation: a single-center experience and review of the literature

A Dębska-Ślizień et al. Transplant Proc. 2014 Oct.

Abstract

After kidney transplantation (KT), pregnancy is possible, although the risk of maternal and fetal complications is much higher than in the general population. Outcome of 22 pregnancies in 17 patients transplanted in the Gdańsk center in the period 1980-2012 was studied. Mean maternal age at pregnancy was 30 ± 5 (range, 23-39) years, interval between transplantation and conception 3.4 ± 2.5 (range, 0.6-11) years. Mean creatinine concentration before conception was 1.29 ± 0.36 (range, 0.8-2.45) mg/dL and was stable during 1 year preceding pregnancy (mean increase, 0.01 mg/dL). Nine of the 17 patients received 1 and 4 received ≥2 antihypertensive drugs, and 1 had proteinuria. Twelve of the 17 patients were primagravidas, 1 was pregnant 3 times, and 14 times. At the time of conception, 20 patients received CNI (14 cyclosporine, 6 tacrolimus), 15 antimetabolites (3 mycophenolate mofetil [MMF], 12 azathioprine), 1 mammalian target of rapamycin inhibitor (mTORi; sirolimus), and all prednisone. MMF and mTORi were discontinued before or during the 1st weeks of pregnancy. Maternal outcome: all survived the pregnancy. None experienced rejection or graft loss as a direct result of pregnancy. Maternal complications included edema (5/17), worsening of blood pressure control (5/17), and worsening (1/17) or new onset of proteinuria (2/17). Mean creatinine decrease during pregnancy was 0.06 mg/dL. Mean creatinine 1 year after pregnancy was 1.49 ± 0.53 mg/dL. There were 12 cesarean sections. Fetal outcomes: 17 live births (2 with serious congenital defects), 2 spontaneous and 1 induced abortion, 2 stillbirths. Mean pregnancy age and neonate birth weights were 35 ± 4 (range, 23-39) weeks and 2,552 ± 629 (range, 1,480-3,420) g, respectively. During mean 8.5 (range, 1-25) years of follow-up after pregnancy, 4/17 patients lost grafts. Grafts were lost in the 3rd to 7th years after pregnancy. We conclude that pregnancy does not exert a direct negative influence on patient and graft survivals; 68% of all pregnancies resulted in delivering healthy neonates.

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